[[["容易理解","easyToUnderstand","thumb-up"],["確實解決了我的問題","solvedMyProblem","thumb-up"],["其他","otherUp","thumb-up"]],[["難以理解","hardToUnderstand","thumb-down"],["資訊或程式碼範例有誤","incorrectInformationOrSampleCode","thumb-down"],["缺少我需要的資訊/範例","missingTheInformationSamplesINeed","thumb-down"],["翻譯問題","translationIssue","thumb-down"],["其他","otherDown","thumb-down"]],["上次更新時間：2025-09-04 (世界標準時間)。"],[[["\u003cp\u003eCompute Engine reservations can be used to ensure VM resources are available for Dataflow jobs.\u003c/p\u003e\n"],["\u003cp\u003eTo utilize reservations, create a Compute Engine reservation and pass the appropriate service option when submitting a Dataflow job, dependent on the Beam SDK version used.\u003c/p\u003e\n"],["\u003cp\u003eSetting the reservation affinity to \u003ccode\u003enone\u003c/code\u003e for low-priority workloads prevents competition for reservations with Dataflow jobs.\u003c/p\u003e\n"],["\u003cp\u003eDataflow worker configurations must match the reservation's configuration to successfully consume the reserved resources, which may require adjustments to the worker machine type.\u003c/p\u003e\n"],["\u003cp\u003eCompute Engine reservations used with Dataflow are billed by Dataflow while the job runs and by Compute Engine when idle, and they are not eligible for Compute Engine committed use discounts.\u003c/p\u003e\n"]]],[],null,["# Use Compute Engine reservations with Dataflow\n\nTo ensure that VM resources are available when your Dataflow jobs need\nthem, you can use Compute Engine reservations. Reservations provide a high\nlevel of assurance in obtaining capacity for Compute Engine zonal\nresources.\n\nTo use Compute Engine reservations with Dataflow, perform the\nfollowing steps:\n\n1. Create a Compute Engine reservation. It can be a single-project\n reservation or a shared reservation. For more information, see the following\n documents:\n\n - [Create a reservation for a single project](/compute/docs/instances/reservations-single-project)\n - [Create a shared reservation](/compute/docs/instances/reservations-shared)\n\n The reservation can include GPU accelerators.\n2. When you submit your Dataflow job, pass one of the following\n service options, depending on which version of the Beam SDK you are using:\n\n - Beam version \\\u003c 2.29: `--experiments=skip_gce_quota_verification`\n - Beam version \\\u003e= 2.29: `--dataflow_service_options=automatically_use_created_reservation`\n\nTo prevent low-priority workloads in the same project from competing for\nreservations with Dataflow, set the reservation affinity to\n`none` when you create VMs for those workloads. For more information, see\n[Consuming reserved instances](/compute/docs/instances/reserving-zonal-resources#consuming_reserved_instances).\n\nIn order to use the reservation, the Dataflow workers must match\nthe reservation configuration. You might need to set the worker machine type for\nthe job. For more information, see\n[Workers](/dataflow/docs/request-quotas#workers).\n\nLimitations\n-----------\n\n- All limitations of Compute Engine reservations apply when\n Dataflow workers consume reservations. See\n [How reservations work](/compute/docs/instances/reservations-overview#how-reservations-work).\n\n- Dataflow relies on the\n [default consumption order](/compute/docs/instances/reservations-overview#consumption-order)\n in Compute Engine. As a result, the following limitations apply:\n\n - Dataflow does not consume a reservation created with the `--require-specific-reservation` flag.\n - Other workloads in the same project or Organization that do not specify the `--reservation` flag might compete with Dataflow workloads for project-specific or shared reservations.\n- Dataflow Prime jobs don't consume Compute Engine reservations.\n\nPricing\n-------\n\nReserved Compute Engine VMs are billed by Dataflow while\nthe Dataflow job is running, and are billed by\nCompute Engine when the VMs are not being used by\nDataflow.\n\nIf you use your Compute Engine reservations with\nDataflow, then those reserved resources aren't eligible for\n[Compute Engine committed use discounts](/compute/vm-instance-pricing#committed_use).\nUsage is billed by using the\n[Dataflow pricing model](/dataflow/pricing).\n\nWhat's next\n-----------\n\nTo learn more about Compute Engine reservations, see\n[Reservations of Compute Engine zonal resources](/compute/docs/instances/reservations-overview)."]]
